Thirunarayanan Balathandayuthapani eee73ddfbb MDEV-12255 innodb_prefix_index_cluster_optimization hits debug build ...

assert on UTF-8 columns

Problem:
=======
(1) Multi-byte character cases are not considered during prefix index
cluster optimization check. It leads to fetch of improper results during
read operation.
(2) Strict assert in row_sel_field_store_in_mysql_format_func and it asserts
for prefix index record to mysql conversion.

Solution:
========
(1) Consider the case of multi-byte character during prefix index
cluster optimization check.
(2) Relax the assert in row_sel_field_store_in_mysql_format_func to allow
prefix index record to mysql format conversion.

The patch is taken from
1eee538087

2018-03-20 17:53:33 +05:30

22 KiB

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